D850 kill switch solution

dear team plz i need solution for
lg g3 d850 kill switch
error occurs release test point
here is log ans screenshot


Checking data…OK
Platform: LG Qualcomm
Selected port: COM75
Selected model: D850
To deactivate Kill Switch do the next:
1. Attach testpoint as shown on Figure in manual, and connect phone with Micro USB cable.
2. Check PC Device Manager, a new device should appear "Qualcomm HS-USB QDLoader 9008".
3. Release testpoint.Failed!
Performed by 2.3.5 software version.